Acadian Gas Pipeline System

From Global Energy Monitor
This article is part of the Global Fossil Infrastructure Tracker, a project of Global Energy Monitor.

Acadian Gas Pipeline System is an operating natural gas pipeline system in Louisiana, USA.[1]


The pipeline runs from the Haynesville shale field, to Baton Rouge, Louisiana, to New Orleans, Louisiana, and through Acadia and Vermillion Parishes.[2]

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Project Details

  • Owner: Enterprise Products Partners LP[1]
  • 'Capacity: 1.8 billion cubic feet per day[1]
  • Length: 2111.5 kilometers / 1312 miles[1]
  • Status: Operating[1]


The Acadian Gas Pipeline System transports natural gas from onshore developments and, through connections with offshore pipelines, Gulf of Mexico production to local gas distribution companies, electric generation and industrial customers, including those in the Baton Rouge–New Orleans–Mississippi River corridor.[1]

An original system of pipelines was in operation in southern Louisiana in the early 2000s, and in October 2009, Enterprise Products Partners LP and Duncan Energy Partners LP announced plans to extend the gas pipeline system into northwestern Louisiana.[3] This project is called the Haynesville Extension and is now considered part of the full Acadian Gas Pipeline System. The extension project added 270 miles of 42- an 36-inch pipeline with a capacity of 1.8–2.1 billion cubic feet per day.[4] The Haynesville Extension was completed in November 2011 and entered into service that year.[5]

Enterprise Products Partners has a 100% ownership interest in the pipeline system.[1] Enterprise acquired the pipeline system through its September 2000 acquisition of Acadian Gas, LLC from Coral Energy, LLC, an affiliate of Royal Dutch Shell, for US$226 million in cash.[6]

Extension projects

Gillis Lateral Pipeline

In October 2019, Enterprise announced a proposal to extend the Acadia Gas Pipeline System with an 80-mile, 1 billion cubic feet per day pipeline within Louisiana.

Gillis Lateral Pipeline location

The lateral extension will connect the Acadian Gas Pipeline System's mainline to Gillis, Louisiana.[7]

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Gillis Lateral Pipeline details

Project details

  • Owner: Enterprise Products Partners LP[1]
  • Capacity: 1 billion cubic feet per day[8]
  • Length: 128.7 kilometers / 80 miles[8]
  • Status: Operating[9]
  • Start year: 2021[8]

Gillis Lateral Pipeline background

When proposed, the Gillis Lateral Pipeline was expected to lead to a net increase in the capacity of the Acadia Gas Pipeline System of 300 million cubic feet per day, from 1.8 to 2.1 billion cubic feet per day.[8]

As of September 2021, construction did not appear to have formally started on the pipeline, though Enterprise Products Partners LP did appear to be hiring for the work.[10]

In December 2021, Enterprise Products Partners announced that the Gillis Lateral pipeline had started commercial service, with the capability to transport about 1 billion cubic feet per day of natural gas. An Enterprise official said, "The Gillis Lateral is fully subscribed with long-term, firm commitments from shippers".

Articles and resources


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Natural Gas Pipelines & Services, Enterprise Products Partners L.P., accessed Sep. 1, 2021.
  2. Map of Enterprise Pipelines, Enterprise Products Partners LP, accessed Sep. 1, 2021.
  3. Christopher E. Smith, Enterprise, Duncan to expand Acadian gas line into Haynesville shale, Oil & Gas Journal, Oct. 28, 2009, accessed Sep. 1, 2021.
  4. Enterprise Produce Partners L.P. October 2010, Investor Presentation, Enterprise Products Partners L.P., Oct. 2020, accessed Sep. 1, 2021.
  5. Natural Gas: Pipelines, US Energy Information Administration, Jul. 27, 2021, accessed Sep. 1, 2021.
  6. Enterprise Acquires Acadian Natural Gas Pipeline System, News Release, Sep. 25, 2000.
  7. Two Haynesville-area pipeline projects due in 2021, Aegis Hedging, accessed Sep. 1, 2021.
  8. 8.0 8.1 8.2 8.3 Enterprise to extend Acadian Gas Pipeline System in Louisiana, Pipeline & Gas Journal, Sep. 20, 2019, accessed Sep. 1, 2021
  9. Enterprise says new pipeline serves US Gulf Coast LNG terminals, Dec. 16, 2021
  10. Job description - Technician, Enterprise Products Partners LP, archived from the original on Sep. 2, 2021.

Related articles

External resources

External articles